Robust Design Optimization of Flexible Backswept Wings with Structural Uncertainties

摘要

A method has been presented for robust optimization design of aeroelastic structure with consideration of structural parameter uncertainties. The robust problem has been transformed into the form of single objective by introducing an additional constraint that represents the relative change of objective and eliminates the weight coefficients defined by user. The method was applied to the complicated structural designs of five composite high-aspect-ratio wings with different backswept angles, in which the structural designs are highly sensitive to uncertainties in the thickness of the layup.